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Chapter 1 1.3.2 Ecosystem Management Kahuku Training Area (KTA) Ecosystem Restoration Management Plan OIP Year 4-8, Oct. 2010 – Sept. 2015 Region: Kahuku Training Area MU: Kaunala, Pahipahialua, Oio, KTA no MU Overall OIP Management Goals: Form a stable, native-dominated matrix of plant communities which support stable populations of IP taxa. Control ungulate, rodent, arthropod, slug, fire, rust fungus, and weed threats to support stable populations of IP taxa. Implement control methods by 2013. Background Information Location: Kahuku Training Area (KTA) Land Owner: US Army Land Manager: Oahu Army Natural Resources Program (OANRP) Acreage: 9,400 acres ~10 acres within fenced MUs Elevation Range: 80 ft. - 2,100 ft Description: KTA is located on the northern extent of Oahu, beginning in the lowlands across Kamehameha Highway from the shrimp farms and agricultural fields to the summit of the Koolau Mountains. The Army purchased KTA from The Estate of James Campbell. The Army uses KTA for pyrotechnic training, foot maneuver training, urban combat training and heli training. The terrain consists of rolling hills dissected by broad drainages in lower elevations, and relatively steep and windswept ridges in upper elevations. Habitat within KTA is highly disturbed with some small, predominantly native forest patches in the mid elevation mesic forest leading up to mostly native stretches of summit and wet forest. MU management is primarily focused within 3 small fenced MUs within the mid elevation mesic forest around the populations of endangered Eugenia koolauensis. Management is also implemented to control key incipient weeds throughout KTA. Road and LZ surveys are conducted to assist in detection of invasive taxa and monitoring spread within the training area. There are four IP species found at KTA. Native Vegetation Types Koolau Vegetation Types Mesic mixed forest Canopy includes: Acacia koa, Metrosideros polymorpha, Psydrax odorata, Nestegis sandwicensis, Diospyros spp., Pouteria sandwicensis, Charpentiera spp., Pisonia spp., Psychotria spp., Antidesma platyphylum, Bobea spp. and Santalum freycinetianum, Pleomele halapepe Understory includes: Microlepia strigosa, Sphenomeris chinensis, Scaevola gaudichaudiana, Alyxia stellata Mesic-Wet forest 2010 Makua and Oahu Implementation Plan Status Report 115 Chapter 1 Ecosystem Management Canopy includes: M. polymorpha, Cheirodendron trigynum, Cibotium spp., Melicope spp., A. platyphyllum, and Ilex anomala. Understory includes: Cibotium chamissoi, Broussasia arguta, Dianella sandwicensis, Dubautia spp. Less common subcanopy components of this zone include Clermontia and Cyanea spp. Primary Vegetation Type in Kaunala, Pahipahialua, and Oio Mesic Gulch OIP Rare Resources: Organism Type Plant Species Cyanea koolauensis Pop. Ref. Code KTA-A Plant Eugenia koolauensis KTA- A, B, C, D, E, F, H, I Plant Gardenia mannii KTA-A, B Plant Population Unit KamananuiKawainui Ridge Pahipahialua, Kaunala, Kaleleiki, Oio, East of Oio, Aimuu, Ohiaai Ihiihi-Kahawainui ridge, KamananuiMalaekahana Summit Ridge Ohiaai Ridge Hesperomannia KTA-A arborescens MFS= Manage for Stability *= Population Dead GSC= Genetic Storage Collection †=Reintroduction not yet done 2010 Makua and Oahu Implementation Plan Status Report Management Designation GSC Wild/ Reintroduction Wild MFS and GSC Wild GSC Wild GSC Wild 116 Chapter 1 Ecosystem Management Other Rare Taxa at KTA: Organism Type Species Plant Bobea timonioides Plant Nesoluma polynesicum Plant Pteralyxia macrocarpa Plant Tetraplasandra gymnocarpa Animal Lasiurus cinereus semotus SOC: Species of Concern, C: Candidate, E: Endangered Status SOC SOC C E E Rare Resources at KTA Cyanea koolauensis Eugenia koolauensis Gardenia mannii 2010 Makua and Oahu Implementation Plan Status Report Eugenia koolauensis Hesperomannia arborescens 117 Chapter 1 Ecosystem Management MU Threats to OIP MFS taxa Threat Taxa Affected Localized Control Sufficient? Pigs Rats Rust fungus Slugs All All E. koolauensis C. koolauensis, G. mannii, H. arborescens Unknown, but may impact rare plants by tending pest insects All All No Yes No Yes MU scale Control required ? Yes No Yes No Unknown Unknown No No Yes Yes Ants Weeds Fire Control Method Available? Yes Yes No Under development Some available, depends on species Yes Yes Management History 1996 - Robust E. koolauensis population found in Pahipahialua 1998 - E. koolauensis surveys conducted in KTA 1998 - Weed control initiated around E. koolauensis populations 1999 - ICA’s established in KTA 2005 - Casuarina equisetifolia removal contracted for Oio and Pahipahialua 2006 - Kaunala, Pahipahialua and Oio MU fences constructed 2006 - Puccinia psidii rust noted on E. koolauensis at all sites 2010 - Thorough census conducted at all E. koolauensis MFS sites Fall 2010 - P. psidii rust control research initiated by OANRP in KTA Ungulate Control Identified Ungulate Threats: Pigs Threat Level: High Primary Objectives: Maintain all three MU fences (Kaunala, Pahipahialua, and Oio) as ungulate free. Monitoring Objectives: Conduct fence checks and read transects quarterly. GPS and mark the fence at ten meter intervals so that the fence will be one large transect. Monitor for pig sign while conducting other management actions in the fence. Monitor fence integrity of all fences after extreme weather/wind events as soon as possible. 2010 Makua and Oahu Implementation Plan Status Report 118 Chapter 1 Ecosystem Management Management Responses: If any pig activity is detected within the fenced units, remove pigs through hunting and/or trapping methods. Check fence and repair breaches. Maintenance Issues: All three fences are prone to possible damage from tree fall and potentially after extreme weather/high wind events. Vandalism to the fences has not been an issue in the past but is always a concern, especially since the Kaunala and Pahipahialua fences are in close proximity to public access trails. Weed Control Weed Control actions are divided into 4 subcategories: 5) Vegetation Monitoring 6) Surveys 7) Incipient Taxa Control (Incipient Control Area - ICAs) 8) Ecosystem Management Weed Control (Weed Control Areas - WCAs) These designations facilitate different aspects of OIP requirements. Vegetation Monitoring Currently there is no plan for MU-scale vegetation monitoring in the Kaunala, Pahipahialua, and Oio MUs. Current OANRP methods of vegetation monitoring are designed for larger scale MUs. These methods would need to be modified, or a different methodology would need to be chosen, in order to accurately detect changes in vegetation composition. Instead we are considering a small-scale monitoring project to examine the effects and potential benefits of common reintroductions in: 1) increasing native plant cover, and 2) reducing weeding effort required to prevent alien vegetation cover levels from exceeding 25%. This trial will help direct future management efforts in Kaunala, Oio, and Pahipahialua. Surveys Army Training?: Yes Other Potential Sources of Introduction: NRS, pigs, public hikers Survey Locations: Landing Zones, Fencelines, High Potential Traffic Areas, Roads Management Objective: Prevent the establishment of any new invasive alien plant or animal species through regular surveys along roads, landing zones, camp sites, fence lines, trails and other high traffic areas (as applicable). Monitoring Objectives: Survey transects for weeds; begin surveys of fenceline ungulate transect. Quarterly surveys of LZs (if used). Annual surveys of Army LZs (required by contract). 2010 Makua and Oahu Implementation Plan Status Report 119 Chapter 1 Ecosystem Management Note unusual, significant or incipient alien taxa during the course of regular field work. Road surveys (required by contract). Management Responses: Any significant alien taxa found will be researched and evaluated for distribution and life history. If found to pose a major threat, control will begin and will be tracked via Incipient Control Areas (ICAs) Surveys are designed to be the first line of defense in locating and identifying potential new weed species. Roads, landing zones, fence lines, and other highly trafficked areas are inventoried regularly; Army roads and LZs are surveyed annually, non-Army roads are surveyed annually or biannually, while all other sites are surveyed quarterly or as they are used. Survey Locations at KTA Incipient Taxa Control (ICAs) Management Objectives: Target high priority species identified as incipient in the region by 2015. Conduct seed dormancy trials for all high priority incipients by 2015. 2010 Makua and Oahu Implementation Plan Status Report 120 Chapter 1 Ecosystem Management Monitoring Objectives: Visit ICAs at stated revisitation intervals. Control all mature plants in ICAs and prevent any immature or seedling plants from reaching maturity. Management Responses: If unsuccessful in preventing immature plants from maturing, increase ICA revisitation interval. ICAs are drawn around each discrete infestation of an incipient weed. ICAs are designed to facilitate data gathering and control. For each ICA, the management goal is to achieve complete eradication of the invasive taxa. Frequent visitation is often necessary to achieve eradication. Seed bank, dormancy and life cycle information are important in making management decisions to facilitate eradication. NRS will compile information for each ICA species and conduct research to understand the biology of incipient species. The table below summarizes incipient invasive taxa at Kahuku Traing Area. While the list is by no means exhaustive, it provides a good starting point for discussing which taxa should be targeted for eradication in the training range. ICAs are not designated for every species in the table below; however, occurrences of all species in the table should be noted in Kahuku Traing Area. All current ICAs are mapped. Three management designations are possible: Incipient (small populations, eradicable), Control Locally (significant threat posed, may or may not be widespread, control feasible at WCA level), and Widespread (common weed, may or may not pose significant threat, control feasible at WCA level). Summary of Potential ICA Target Taxa Taxa Acacia mangium Management Designation Incipient Angiopteris evecta Widespread Arthrostemma ciliatum Widespread Casuarina equisetifolia Control locally Chrysophyllum oliviforme Control locally Ficus spp. Control locally Leucaena leucocephala Control locally Notes Planted by ITAM in 2000. Four sites where OANRP is currently still finding individuals. Widespread in upper elevation areas in Kahuku. The leaves of this fern can form a canopy up to 5 m tall shading out most other plants in the area. High priority for control in MU fences, if found. Widespread across KTA. Of the KTA MU’s only an issue at Oio. High priority for control in fenced areas. OANRP is currently using a foliar application due to the plants vegetative reproduction abilities. OANRP need to diligently decontaminate their gear to minimize seed dispersal. Widespread throughout Kahuku. High priority for control in areas near E. kooluaensis; do not significantly altering light levels around E. koolauensis. Widespread throughout Kahuku. Chrysophyllum oliviforme is a habitat modifier that creates monotypic stands. It is a high priority for OANRP to do thorough sweeps targeting C. oliviforme inside the MU fences as well as a 5m buffer around the fences. Widespread throughout Kahuku. Ficus spp. is a habitat modifier that can strangle and shade out native species. It is a high priority for OANRP to do thorough sweeps targeting Ficus spp. inside the MU fences as well as a 5m buffer around the fences. Widespread throughout Kahuku. Leucaena leucocephala grows quickly and in dense thickets which crowd out any native vegetation. It is a high priority for OANRP to do thorough sweeps targeting L. leucocephala inside the MU fences as well as a 5m buffer around the fences. 2010 Makua and Oahu Implementation Plan Status Report No. of ICAs 5 0 0 0 0 0 121 Chapter 1 Taxa Leptospermum scoparium Ecosystem Management Management Designation Widespread Macaranga mappa Control locally Melaleuca quinquenervia Control locally Melochia umbellata Incipient Pennisetum setaceum Incipient Pimenta dioica Control locally Pluchea carolinensis Control locally Psidium cattleianum Widespread Pterolepis glomerata Widespread Rhodomyrtus tomentosa Incipient Sideroxylon persimile Incipient Notes Widespread in upper elevation areas in Kauhuku. This small, scrubby tree forms thickets which crowd out other plants. It appears to have allelopathic activity like many other members of the Myrtaceae. Herbicide Ballistic Technology™ with James Leary has been tested on a handful of plants. If aerial control techniques become available, consider targeting this species across landscape. Macaranga mappa is naturalized in Kahuku. This large leaved tree forms dense thickets, crowding out other plants and forming deep shade areas. It is a high priority for OANRP to do thorough sweeps targeting M. mappa inside the MU fences as well as a 5m buffer around the fences. Melaleuca quinquinnervia has been planted extensively in reforestation projects throughout Oahu. This is a high priority for OANRP due to the allelopathic activities of this species, as well as the ability to harbor Puccinia psidii,Ohia rust. OANRP staff thoroughly sweep inside MU fences as well as a 5m buffer around the MU fences. First started control in 1999. Highly invasive, particularly on the Big Island. On Oahu, only known from KTA and Punaluu. Likely introduced via military training. There are two sites OANRP is still currently finding individuals. Other three site OANRP staff have not found since 2006. One new site found in 2010. First discovered in 1998. Highly invasive grass with known tolerance of fire. Likely introduced to KTA via military training. Last plant found in 2004. Site is still monitored by OANRP annually and will continue to monitor until the seed dormancy is known. Preliminary research suggest seeds may only be viable for a year. Widespread throughout Kahuku. High priority for control in all areas near E. kooluaensis without significantly altering light levels. Harbors Puccinia rust. Forms dense thickets. OANRP staff thoroughly sweep inside MU fences as well as a 5m buffer around the MU fences. Widespread throughout Kahuku. Tends to colonize open sunny areas. High priority for control in MU fences without significantly altering light levels. Widespread throughout Kahuku. High priority for control in MU fences without significantly altering light levels. Forms dense monocultures. May harbor Puccinia rust, as it is in the Myrtaceae family. This melastome is ubiquitous across the Koolaus. It thrives in disturbed areas, particularly pig wallows. OANRP do not currently target it for control. Strict sanitation measures should be followed to ensure staff do not accidentally track it to the Waianaes. One immature was found in 2005. OANRP continues to monitor site. Plant possibly introduced by motocross users. Taxa widespread in the Kaneohe area, where it forms dense monocultures. Also highly invasive on Kauai. One immature was Found in 2008. OANRP continues to monitor site. No information on how plant might have established in the area. 2010 Makua and Oahu Implementation Plan Status Report No. of ICAs 0 0 6 1 1 0 0 0 1 1 122 Chapter 1 Taxa Setaria palmifolia Ecosystem Management Management Designation Control locally Sphaeropteris cooperi Widespread Spathodea camapnulata Syzygium cumini Control localy Syzigium jambos Widespread Widespread Notes Setaria palmifolia is widespread across Kahuku. It high priority for OANRP staff to do thorough sweeps targeting S.palmifolia throughout the fence as well as a 5m buffer around the fences. OANRP need to diligently decontaminate their gear to minimize seed dispersal. Widespread in the upper areas of Kahuku. High priority for control in MU fences. If aerial control techniques become available, consider controlling across the landscape. Widespread throughout Kahuku. High priority for control in MU fences without significantly altering light levels. Widespread throughout Kahuku. This large tree forms a dense cover, excluding all other species. The large black fruit are dispersed by birds and perhaps occassionally by feral pigs. OANRP staff thoroughly sweep inside MU fences as well as a 5m buffer around the MU fences. Widespread throughout Kahuku. S. jambos is a major host for the Puccinia rust. Stands of S. jambos have been defoliated by the rust, although the rust does not necessarily appear to kill S. jambos. Dead-looking stands are highly visible from a distance. The proximity of rust reservoirs to E. koolauensis populations is very concerning. All S. jambos inside MU fences, and in a 5m buffer around the fences, are targeted for control. If aerial control options become available, consider controlling S. jambos stands within 1km of known E. koolauensis. 2010 Makua and Oahu Implementation Plan Status Report No. of ICAs 0 0 0 0 0 123 Chapter 1 Ecosystem Management Incipient and Weed Control Areas at KTA Ecosystem Management Weed control (WCAs) OIP Goals: Within 2m of rare taxa: 0% alien vegetation cover Within 50m of rare taxa: 25% or less alien vegetation cover Throughout the remainder of the MU: 50% or less alien vegetation cover Management Objectives: Maintain 50% or less alien vegetation cover in the understory across the MU. Reach 50% or less alien canopy cover across the MU in the next 5 years. In WCAs within 50m of rare taxa, work towards achieving 25% or less alien vegetation cover in understory and canopy. Management Responses: 2010 Makua and Oahu Implementation Plan Status Report 124 Chapter 1 Ecosystem Management Increase/expand weeding efforts if MU vegetation monitoring (conducted every 3 years) indicates that goals are not being met. Weed strategies around E. kooluaensis should be executed with extreme caution. When weeding the over story around E. kooluaensis light levels should be maintained. Weeding should be primarily focused on understory weeds around E. kooluaensis. WCA: Oio-01 KTA-F Veg Type: Mesic / Mid-Slope / Gulch OIP Goal: 10% native cover Targets: All weeds, focusing on P. carolinensis, Ficus sp., C. oliviforme, P. dioica, C. equisetifolia, M. quinquenervia, M. mappa, S. campanulata, A. ciliatum, S. palmifola, L. leucocephala. Priority: High. Notes: There is a wild E. koolauensis in this WCA. No other rare species found in the WCA. OANRP staff plan to weed around the E. koolauensis annually across the entire WCA once every year until OIP goals are achieved. Extreme care must be used when weeding around rare species. WCA: East Oio-01 KTA-D Veg Type: Mesic / Mid-Slope / Gulch OIP Goal: 10% native cover Targets: All weeds, focusing on P. carolinensis, Ficus sp., C. oliviforme, P. dioica, C. equisetifolia, M. quinquenervia, M. mappa, S. campanulata, A. ciliatum, S. palmifola, L. leucocephala. Priority: High. Notes: There are wild E. kooluaensis and reintroductions of common natives in this WCA. No other rare species found in this WCA. This WCA contains two separate areas, east and west of the dividing ridge. OANRP staff plan to work around the E. koolauensis twice a year and across the entire WCA once every year until OIP goals are achieved. Extreme care must be used when weeding around rare species. WCA: Pahipahialua-01 KTA-A Pahipahialua Veg Type: Mesic Ridges / Mesic Gulches OIP Goal: 10% native cover Targets: All weeds, focusing on P. carolinesnsis, Ficus. spp., C. oliviforme, P. dioica, C. equisetifolia, M .quinquenervia, M. mappa, S. campanulata, A. ciliatum, S. palmifola, L. leucocephala and Grevillia robusta. Priority: High. Notes: There are wild E. kooluaensis and reintroductions of common native species in this WCA. No other rare species found in this WCA. OANRP staff plan to work around the E. koolauensis twice a year and across the entire WCA once every year until OIP goals are achieved. Extreme care must be used when weeding around rare species. 2010 Makua and Oahu Implementation Plan Status Report 125 Chapter 1 Ecosystem Management WCA: Kaunala-01 KTA B/E Kaunala Veg Type: Mesic/Mid Slope OIP Goal: 15% native cover. Targets: All weeds, focusing on P. carolinesnsis, Ficus spp., C. oliviforme, P. dioica, C. equisetifolia, M. quinquenervia, M. mappa, S. campanulata, A. ciliatum, S. palmifola, L. leucocephala, G. robusta, Passiflora suberosa. Priority: High. Notes: This WCA contain the highest concentration of wild E. kooluaensis compared to the other WCA’s in the Kahuku area. No other rare species found in this WCA. OANRP staff plan to work around the E. koolauensis twice a year and across the entire WCA once every year until OIP goals are achieved. Extreme care must be used when weeding around rare species. WCA: Kaleleiki-01 Veg Type: Mesic Forest OIP Goal: 50% native cover Targets: All weeds, focusing on, P. cattleianum, C. hirta, C. equisetifolia, P. edulis, and P. suberosa. Priority: High. Notes: There are wild E. kooluaensis in fence. No other rare species found in this WCA. Kaleleiki is owned by the State of Hawaii and is in a game management area. NRS needs to collaborate with the state to develop weed control strategies. The WCA is surrounded by C. equisetifolia requiring annual sweeps to control any immature individuals. Rodent Control Species: Rattus rattus (Black rat), Rattus exulans (Polynesian rat), Mus musculus (House mouse) Threat level: Unkown Current control method: None Seasonality: N/A Number of control grids: None Primary Objective: To implement rodent control if determined necessary for the protection of rare plants Monitoring Objective: Monitor rare plant populations to determine impacts by rodents. MU Rodent Control: OANRP have observed predated fruits of Cyanea sp. within other MUs, however no rat predation has been observed at KTA. Currently no rodent control is conducted by OANRP around the C. koolauensis, E. koolauensis, G. Mannii, and H. arboescens. If rare plants are determined to be 2010 Makua and Oahu Implementation Plan Status Report 126 Chapter 1 Ecosystem Management impacted adversely by rodents OANRP will evaluate the use of localized rodent control for the protection of rare species. Slug Control Species: Unknown Threat level: Low Control level: Localized Seasonality: Wet season Number of sites: Cyanea koolauensis site (1 site KTA-A) Primary Objective: Determine whether slugs are present within the vicinity of C. koolauensis If present, reduce slug population to levels where germination and survivorship of C. koolauensis is unaffected by predation. Management Objective: If slugs are present in numbers sufficient to negatively impact C. koolauensis seedling survival begin control program using Sluggo (if additional conservation use labeling is approved) By 2013, reduce slugs by at least 50% of estimated baseline densities around the C. koolauensis population through a pilot control program Monitoring Objectives: Annual census monitoring of C. koolauensis seedling recruitment following fruiting events. Annual census monitoring of slug densities during wet season. No slugs have been collected within this MU, however, they may be present as no focused surveys have taken place. It is unlikely that slugs are abundant given the dry habitat. Rust Control Species: Puccinia psidii Threat level: High Control level: Localized Seasonality: Year round Number of sites: Six to eight E. koolauensis populations Acceptable Level o fActivity: Unknown Primary Objective: Reduce the disease incidence (number of diseased leaves/total number of leaves) and prevent infection of new individuals. Management Objective: Remove alien tree species which serve as hosts for P. psidii (P. dioica, M. quinquenervia, Syzigium jambos, S. cumini), particularly those upwind of E. koolauensis. 2010 Makua and Oahu Implementation Plan Status Report 127 Chapter 1 Ecosystem Management Conduct research to develop fungicide treatments which are both safe and effective against rust in a field setting. Monitoring Objectives: Annual monitoring of disease incidence within E. koolauensis population(s). Annual sweep of areas surrounding E. koolauensis to locate alien tree species which can serve as hosts to the rust. Three methods are recommended for disease control: disease avoidance, planting resistant genotypes, and fungicide applications. A degree of disease avoidance may be achieved by removing alien trees which serve as rust hosts. OANRP plans to target host trees within 100 m of E. koolauensis within the boundaries of the fence line. Aerial application of herbicide is a possibility for monotypic alien tree stands such as the patch of S. jambos situated near the Oio population. When taking cuttings for propagation of E. koolauensis, it is desirable to take material from individuals with the lowest disease incidence. In practice, however, E. koolauensis must be propagated from whichever cuttings successfully root. A few fungicides have been effective in preventing rust infection in M. polymorpha but none are labeled for use on E. koolauensis in the wild. With permission from the Hawaii Department Agriculture, OANRP hopes to begin field testing a subset of these fungicides. If proven effective and not phytotoxic to E. koolauensis, an expansion of the fungicide label may be pursued. E. koolauensis showing clusters of rust pustules (groups of urediniospores are yellow-orange in color). 2010 Makua and Oahu Implementation Plan Status Report 128 Chapter 1 Ecosystem Management Rust is most common on new leaf flush. E. koolauensis with rust lesions on the young leaves. Ant Control Species: Leptogenys falcigera, Pheidole megacephala confirmed Threat level: Unknown Control level: Only for new incipient species Seasonality: Varies by species, but nest expansion observed in late summer, early fall Number of sites: Three, trailhead to Oio, Pahipahialua and Kaunala E. koolauensis sites Acceptable Level of Ant Activity: Unknown Primary Objective: Eradicate incipient ant invasions and control established populations when densities are high enough to threaten rare resources. Management Objective: If incipient species are found and deemed to be a high threat and/or easily eradicated locally (<0.5 acre infestation) begin control. Ant populations will be kept to a determined acceptable level across the MU to facilitate ecosystem health. Monitoring Objective: Sample ants at human entry points (trailhead to Oio, Pahipahialua and Kaunala). Use samples to track changes in existing ant densities and to alert NRS to any new introductions. Look for evidence of ant tending of aphids or scales on rare plants. 2010 Makua and Oahu Implementation Plan Status Report 129 Chapter 1 Ecosystem Management Ants have been documented to pose threats to a variety of resources, including native arthropods, plants (via farming of Hemipterian pests), and birds. It is therefore important to know their distribution and density in areas with conservation value. This can be accomplished using a survey methodology developed by S. Plentovich (UH Manoa). The protocol for sampling ants follows: Place index cards (3 X 5 inches) containing SPAM, peanut butter and honey throughout the sampling area. Place card so that it is halfway out of a ziplock “sandwich” bag. Deploy a minimum of 10 cards separated by at least 15 meters and label them with the date, location, card # and collector name. Deploy cards no earlier than 8:00 am in the morning and leave them in places where ants were likely to forage (under vegetation) for 1 hour. Collect baits rapidly by slipping the card into its accompanying ziplock and immediately closing the ziplock. Bring samples in for identification. Standardized surveys have not yet taken place. Opportunistic collection confirms that the following two species are present: L. falcigera and P. megacephala. The first species occurs in low numbers and is not considered a threat to native resources. The second is present in high numbers at Pahipahialua but does not appear to be damaging E. koolauensis. Both species are well established and widespread throughout Oahu, therefore any attempt at control would be temporary. While control is not recommended at this time, future surveys are needed to ensure new species are not becoming established. Fire Control Threat Level: Low Available Tools: Fuelbreaks, Visual Markers, Helicopter Drops, Wildland Fire Crew, Red-Carded Staff. Management Objective: To prevent fire from burning any portion of the MUs at any time. Preventative Actions: There is little infrastructure to reduce the threat of fire. NRS will focus on maintaining good communication with the Army Wildland Fire Working Group to facilitate positive on-the-ground fire response. NRS will maintain red-carded staff to assist with fire response. 2010 Makua and Oahu Implementation Plan Status Report 130 Chapter 1 Ecosystem Management Burned area at Pahipahialua, stretching from ridge (point of ignition) to E. koolauensis location. E. koolauensis seedling, with burned C. equisitifolia. 2010 Makua and Oahu Implementation Plan Status Report Edge of fire behind E. koolauensis trunk. 131 Chapter 1 Action Type Ecosystem Management Actions OIP Year 3 Oct 2010Sept 2011 4 Vegetation Monitoring General Survey 1 2 3 OIP Year 4 Oct 2011Sept 2012 4 1 2 3 OIP Year 5 Oct 2012Sept 2013 4 1 2 3 OIP Year 6 Oct 2013Sept 2014 4 1 2 3 OIP Year 7 Oct 2014Sept 2015 4 1 2 3 Conduct common reintro trial/monitoring Survey LZ’s actively used by the army once a year Conduct road surveys of frequently used army access roads. KTA-AcaMan-01:Monitor/control AcaMan at lower oio road site every 6 months. Pick and remove from field any potentially viable fruit. KTA-AcaMan-02: Monitor/control Acaman at upper oio road site every 6 months. Pick and remove from field any potentially viable fruit. KTA-AcaMan-03: Survey aerially greater Canes area every 2-3 years to facilitate control efforts. ICA KTA-AcaMan-03: Monitor/control AcaMan at Canes complex. Sweep entire ICA every 6 months. Pick and remove from field any potentially viable fruit. Track weeding effort with GIS; large ICA KTA-AcaMan-04: Monitor/control AcaMan at Puu 804 every 6 months. Pick and remove from field any potentially viable fruit. KTA-Melumb-01: Monitor/control Melumb at roadside core quarterly. Pick and remove from field any potentially viable fruit. KTA-Melumb-01: Spray roadside with Garlon/Roundup mix to faciliatate survey/detection. Every 6 months or as needed. 2010 Makua and Oahu Implementation Plan Status Report 132 Chapter 1 Action Type Ecosystem Management Actions OIP Year 3 Oct 2010Sept 2011 4 1 2 3 OIP Year 4 Oct 2011Sept 2012 4 1 2 3 OIP Year 5 Oct 2012Sept 2013 4 1 2 3 OIP Year 6 Oct 2013Sept 2014 4 1 2 3 OIP Year 7 Oct 2014Sept 2015 4 1 2 3 KTA-MelUmb-02: Monitor/control MelUmb at Kaunala/off-road site. Pick and remove from field any potentially viable fruit. Flag locations of any plants found to facilitate later follow-up. Visit all hot spots and sweep upper portion of ICA quarterly. Track weeded KTA-MelUmb-02: Survey aerially every 2-3 years to facilitate control efforts. KTA-MelUmb-02: Monitor lowest know plant site (in gulch) annually. KTA-MelUmb-03: Monitor/control MelUmb at west outlier site annually. Pick and remove from field any potentially viable fruit. KTA-MelUmb-04: Monitor/control MelUmb at east outlier site annually. Pick and remove from field any potentially viable fruit. KTA-MelUmb-05: Monitor/control MelUmb at delta farmer's gate site annually. Pick and remove from field any potentially viable fruit. KTA-PenSet-01: Monitor/control Penset at watertank hill road site annually. KTA-RhoTom-01: Monitor/control RhoTom on road below Puu 1010 annually. KTA-Sidper-01: Survey around known ICA to distance of 200m. Verify that SidPer not present elsewhere. Update ICA shape. GPS. KTA-Sidper-01: Monitor/control SidPer at charlie road site annually. 2010 Makua and Oahu Implementation Plan Status Report 133 Chapter 1 Action Type Ecosystem Management Actions OIP Year 3 Oct 2010Sept 2011 4 1 2 3 OIP Year 4 Oct 2011Sept 2012 4 1 2 3 OIP Year 5 Oct 2012Sept 2013 4 1 2 3 OIP Year 6 Oct 2013Sept 2014 4 1 2 3 OIP Year 7 Oct 2014Sept 2015 4 1 2 3 GPS boundaries of all existing WCAs. Use geographical and vegetation data. Use landmarks to mark in field GPS trails General WCA Aimuu No MU EastOio-01 Kaunala -01 Determine whether Oio will remain a MFS population, or if Kaleleiki will replace it as an MFS population. Revise plan accordingly Evaluate E. koolauensis Aimuu site to determine need for weed control. Obtain permission from land owner for access. Conduct weed control across (proposed) exclosure annually. This is a genetic storage population. Focus around Eugkoo; exercise extreme care around Eugkoo seedlings. Target understory weeds. Control canopy weeds gradually to prevent major light changes. Conduct weed control across (proposed) exclosure annually. This is a genetic storage population. Focus around Eugkoo; exercise extreme care around Eugkoo seedlings. Target understory weeds. Control canopy weeds gradually to prevent major light changes. Control weedy grasses across exclosure as needed. Focus around native plants, Eugkoo, but exercise care around Eugkoo seedlings. Target Oplhir, Pascon. Target Casgla/equ, Melqui, Eucrob, Grerob and other very large potentially allelopathic trees for removal. 2010 Makua and Oahu Implementation Plan Status Report 134 Chapter 1 Action Type Ecosystem Management Actions OIP Year 3 Oct 2010Sept 2011 4 1 2 3 OIP Year 4 Oct 2011Sept 2012 4 1 2 3 OIP Year 5 Oct 2012Sept 2013 4 1 2 3 OIP Year 6 Oct 2013Sept 2014 4 1 2 3 OIP Year 7 Oct 2014Sept 2015 4 1 2 3 Conduct weed control across exclosure, focusing on areas around Eugkoo first, then around other native species, then on connecting these areas. Target understory, gradually control canopy (minimize light change). Use volunteers whenever possible. Maintain clear LZ as needed. May not need, as road now runs through LZ. Conduct weed control across the exclosure every 6 months/year. This is a genetic storage population. All management actions to be cleared with the State. Exercise extreme care around Eugkoo seedlings. Focus on understory weed control. Kaleleiki -01 Control grass (Pascon) across the exclosure every 6 months/year. This is a genetic storage population. All management actions to be cleared with the State. Exercise extreme caution around Eugkoo seedlings. Control weedy grasses across exclosure as needed. Focus around native plants, Eugkoo, but exercise care around Eugkoo seedlings. Target Oplhir, Pascon. Oio -01 Conduct weed control across exclosure, focusing on areas around Eugkoo first, then around other native species and common reintroductions, then on connecting these areas. Target understory, gradually control canopy (minimize light change). Use volunteers whenever possible. 2010 Makua and Oahu Implementation Plan Status Report 135 Chapter 1 Ecosystem Management Action Type Actions OIP Year 3 Oct 2010Sept 2011 4 Pahipahialua 01 Ungulate Control Rodent Control Slug Control Rust Control Ant Control 1 2 3 OIP Year 4 Oct 2011Sept 2012 4 1 2 3 OIP Year 5 Oct 2012Sept 2013 4 1 2 3 OIP Year 6 Oct 2013Sept 2014 4 1 2 3 OIP Year 7 Oct 2014Sept 2015 4 1 2 3 Control weedy grasses across exclosure as needed. Focus around native plants, Eugkoo, but exercise care around Eugkoo seedlings. Target Oplhir, Pascon. Conduct weed control across exclosure, focusing on areas around Eugkoo first (3 subgulches), then around other native species and common reintroductions, then on connecting these areas. Target understory, gradually control canopy (minimize light change). Kaleleiki- Monitor and maintain fence integrity Kaunala- Monitor and maintain fence integrity Oio- Monitor and maintain fence integrity Pahipahialua- Monitor and maintain fence integrity Monitor rare plants for predation by rodents Implement localized rodent control if determined to be necessary for the protection of rare plants. Monitor slug activity at C. koolauensis site Monitor C. koolauensis seedling recruitment following fruiting events If slugs found to exceed acceptable levels during monitoring, maintain slug bait at sensitive plant population(s) Remove alien host trees Survey E. koolauensis for rust Test fungicides, pursue label expansion if feasible Conduct surveys for ants at human entry points annually Implement control if deemed necessary hatched=planned Qtr 2010 Makua and Oahu Implementation Plan Status Report 136